Abstract
Today’s in modern world security is the main issue while communication. Internet is main source for communication but also it is not as much secure as it assume. For secure transmission of data many algorithms have been developed. Steganography and encryption/decryption algorithms are used for confidentiality. Some times to improve the security both the algorithms are combined. There is always a trade to develop an algorithm which provides high security in less time than the existing one. This paper proposed a new structure called HCCA (High Confidentiality Cryptography Algorithm) which is a combination of encryption/decryption and steganography algorithm. The key feature of this algorithm is that it is highly secure, time efficient and required small cover file.
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